New create-tenant option idempotent useful for docker initialization. Other minor fixes

Change-Id: I1da8ddfbad06c1a1f0c490f5e606c48aaec4ecd0
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/docker/scripts/start.sh b/docker/scripts/start.sh
index 136bf85..1506e3a 100755
--- a/docker/scripts/start.sh
+++ b/docker/scripts/start.sh
@@ -125,4 +125,4 @@
 
 
 echo "4/4 Try to start"
-/usr/bin/openmanod -c /etc/osm/openmanod.cfg --log-file=/var/log/osm/openmano.log
+/usr/bin/openmanod -c /etc/osm/openmanod.cfg --log-file=/var/log/osm/openmano.log --create-tenant=osm